Breech-lock for firearms.



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JOSEF DUFFEK, 0F STEYR, AUSTRIA-HUNGARY, ASSIGNOR T0 THE FIRM 0F OESTERABEICHISCHE WAFFENFABRIKS-GESELLSCHAFT, O1 STEYR, .AUSTTA- HUNGARY.

BBEECH-LOCK FOB FIREARMS.

' Patented Dea?, 1915,

Y Application filed July 13, l1915. Serial No.l 39,672.

To all 'whom it may concern Be it' known that' I, Josnr D Urrnn, director of a company, a subject of the Emperor of Austria-Hungary, residing at `\Steyr, Upper Austria, in the Empire of Austria-Hungary, have invented certain new and useful Improvements in BreecliLocks for Firearms, of which the following is a specification.

The invention relatesfto locking device for the movable breech bolt of automatic fire-arms with magazine chamber in the case' of which a two-armed locking lever'is arranged in the casing, which lever ordinarily, that is, when the magazine is charged, isi forced out ie path of the movable breech part` by n is of a spring.

len the magazine "is en a depending arm fixed to thev front a of the locking lever is `adapted to. abut means of its projection against a beveled-off projection of the feeding lever, whereby the front arm of Ythe locking lever is rocked outward and the rear arm is rocked inward'as soon as its spring is tensioned, whereby a catch fixed to the rear end of the last-mentioned arm is caused to move within the `path of the l movable breech bolt, thus maintaining this latter in its open position when the magazine is empty or the last cartridge has been fired oil'.

The accompanying drawings illustrate by way of example a locking device of the type described applied to an automatic fire-arm having a magazine chamber.

Figure 1 is a lateral view partly in section thereof. vFig. '2 is a longitudinal horizontal section, and Fig. 3 is a section according'to the line 3-3 in Fig. 1, the walls of the magazine being removed. f

Referring to these' drawings: A two-armed locking lever b is pivoted in the casing a,

.the spring `c of this lever ordinarily tending to force its rearward arm outward clear of the path of the movable breech bolt d.' The front arm of the locking lever b' is provided with a depending arm e having a pro jection f which is caused to abut 'against the ward.

beveled-off projection 7c of the feeding lever 7L.

The magazine chamber consists of the wall portions f/ and furthermore comprises the feeding lever It, the supporting spring e', the feeding member y' and the magazine holder-m.

When the magazine is empty, the feeding lever It is forced upward by its spring (not shown in the drawings), whereby its pro* Jection/c comes to abut against the projection ,t1 of the depending arm c of the locking lever, thereby cing its frontarm out At the same time, the :rear n of the lever is'rocked inward, causin fixed to the rear arm of the icc to move within the path of the breech bolt i. e. in front of the san" securing this latter in its open po n` Claims:

1. A locking device for' autorisatie irearms having a magazine chamber and a movable breech bolt, said device comprising atwo-armed rocking lever disposed in the chamber Iand formed on one end thereof with acatch, means for moving and normally holding said catch out of the path of said movable breech bolt, an arm extending from said lever, and a feeding lever adapted when vthe magazine is emptied to engage said arm, whereby the rocking lever is opere ated and said catch moved into the path of the movable' breech bolt.

. 2. A locking device for automatic firearms having a magazine chamber and a movable breech bolt, ,said device comprising an intermediately pivoted rocking lever disposed in the chamber, a locking member formed on one end of said lever and adapted to hold lthe breech bolt open when the maga- Zine'is emptied, spring means exerting' teni a cartridgefeeding member for the maga-l '|zine, and a wedge member 'carried by said feeding member` and qdaptedto engage said my hand in presence of two subscribing wtarm when the magazlne 1s emptled, wheremesses,

by the lever is rocked to move said locking 1 1 member in engagement with said movable A L JODEF DUFFLK 5 breech bolt and against, tlhe tension 'of said 'vitnesses:

spnng means. ARTHUR LINDENSTEAD,

In testimony Wher'ebf I have hereunto set l AUGUST FUGGER. 

